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5.7 Ternary system nitroethane-3-methylpentane-cyclohexane

mixtures 3-methylpentane cyclohexane nitroethane Tc oC compositions (weight fraction) (NE-CH) 0.000 0.576 0.424 23.66 n.col(NE-3M-CYC) α′ 0.082 0.488 0.430 22.43 col (NE-3M-CYC) 0.200 0.360 0.440 21.33 n.col (NE-3M-CYC) α′′ 0.300 0.260 0.440 22.45 (NE-3MP) 0.534 0.000 0.466 26.44

Table 5.5: Critical parameters of the mixtures investigated.

Figure 5.40: The plait point line as a function of critical (3MP) content, from the binary system (NE-CH) to (NE-3MP): ◦denote plait points, including the col point (see Tables (5.5) and (5.6)).

and with the col(or saddle)-point composition. The critical compositions and critical tem- peratures are presented in Table (5.5). The ternary mixtures had a constant weight fraction relationship of (CH) and (NE), (w.fr.CH/w.fr.NE = const.). In Fig.(5.41) three plots of density versus reduced temperature are presented. However, as was mentioned before in Section (4.5), although the crossover theory has been developed for binary mixtures, the ternary system (NE-3MP-CH) belongs to the same universality class for dynamical prop- erties as the investigated binary fluids. Nevertheless, within the scope of investigation on

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